Anne Frank betrayal suspect ‘identified after 77 years’

One of World War II's most enduring mysteries may have been solved after a cold-case investigation identified a Jewish notary as the prime suspect in the betrayal of diarist Anne Frank and her family. 

Arnold van den Bergh may have revealed the Franks' hiding place in Amsterdam to the Nazis in a bid to save his own family, according to the six-year inquiry led by a former FBI agent.

The evidence comes from modern data-crunching techniques combined with a long-lost, anonymous note sent to Anne's father Otto naming Van den Bergh, according to a new book about the investigation.

The Anne Frank House museum said it was "impressed" by the evidence in the book being published on Tuesday by Canadian author Rosemary Sullivan, but that further investigation was needed.